Originally Posted by ap72
Port choke and air fuel separation.
Look at the engines being developed now, specifically the current ls and hemi runner designs... also consider those engines will rarely see more than 5,000 rpm and spend the majority of their lives right above idle...
But I'm sure they were doing much better in 1965 than in 2012...
1965 eh. As far as chevy is concerned, compared to today the heads were marginal at best, the open chamber big block head has stood the test of time though.
Now your comparing carburated with fuel injected heads, two worlds apart i would say.
What do you see in Runner design today that is a carry over from carburation?